| Deposit ID | 10000495 |
|---|---|
| MRDS ID | A010682 |
| Record type | Site |
| Current site name | Mamie Mine |
| Alternate or previous names | Brown Alaska Co, Mt Andrew Mine, Stevenstown Mine |
| Geographic coordinates: | -132.28513, 55.51917 (WGS84) |
|---|
Political divisions (FIPS codes)
Prince of Wales-Hyder(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Craig C-1(quadrangle 1:63,360 scale)
Craig NE(quadrangle 1:100,000 scale)
Craig(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Prince of Wales(hydrologic unit)
Southern Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Tongass National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Gold | Primary |
| Silver | Secondary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Magnetite | Ore |
| Pyrite | Ore |
| Calcite | Gangue |
| Epidote | Gangue |
| Garnet | Gangue |
| Limonite | Gangue |
| Malachite | Gangue |
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Marble |
| (1) | -132.28513, 55.51917 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Two Systems Of Folds Trending N 10 W And N 80 E Respectively. One Fault With Several Hundred Ft Of Displacement Trends N 80 E |
| General form | LENSES, IRREGULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1898 |
| Year of first production | 1905 |
| Year of last production | 1918 |
| Year | 1918 | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1905-1918 | ||||||||||||||||||||||||||||
| Accuracy | Accurate | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A010682 |
USGS BULLETIN 347, P. 112-114, 115-117
USBM REPORT OF INVESTIGATIONS 4129.
USGS BULLETIN 1090, P 54-93
USGS OPEN FILE 878-869, P. 124-127, 143-145, 197-198
USGS BULLETIN 1090, P. 54-80
| Subject category | Comment text |
|---|---|
| Deposit | ORE BODIES ARE CONTORTED LENSES OF MAGNETITE CONTAINING DISSEMINATED CHALCOPYRITE AND CALCITE, GARNET AND EPIDOTE GANGUE. AREAS THAT WERE RICHER IN CHALCOPYRITE GRADED TOWARDS MASSIVE. THESE BODIES, WHICH ARE CONTACT METASOMATIC REPLACEMENTS OF LIMESTONE LENSES WITHIN VOLCANICLASTIC STRATA ARE UP TO 600 FEET LONG, 550 FEET WIDE AND 150 FEET DEEP, BUT MOST ARE A GOOD DEAL SMALLER E.G. 50-100 FEET LONG, 10-40 FEET WIDE |
| Deposit | MAMIE, MT ANDREW, AND STEVENSTOWN MINES ARE COMBINED HERE AS A SINGLE DEPOSIT BECAUSE OF PROXIMITY & ESSENTIALLY IDENTICAL DEPOSIT & GELOGIC CHARACTERISTICS. ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-1984 | Hirschmann, M. M. (Elliott, R. L.) | U.S. Geological Survey | |
| Editor | 13-APR-1994 | Mosier, Dan | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.